Many Democrats opposed the law, saying it was intended to suppress the vote by making it harder on the elderly and people with no driver's license. Opponents also said there was little evidence of voter impersonation fraud.

This year, Bennett and other officials helped spread the word about the new requirement with public service announcements and a mobile unit to issue free IDs.

Hezekiah Jackson, president of the Metro Birmingham Branch of the NAACP, said the agency did not receive any complaints about the ID law for the general election.

Jackson said he thinks the law is unnecessary but that people adjusted to it. He said the NAACP helped inform voters in the Birmingham area of the new requirements.

"People that really, really want to vote, they know what they have to do," Jackson said.

Sharon Richards, president of the Metro Montgomery Branch of the NAACP, said she heard from one voter who was initially told by a poll worker that he could not use his military ID.

She said that voter did not accept that and was eventually allowed to vote. Military IDs are one of the acceptable forms of ID under the law.

Richardson said she reported the incident to the Department of Justice and was concerned there were similar incidents where voters gave up and left.

Acceptable IDs under Alabama's law are driver's license; non-driver state ID; photo voter ID; ID issued by another state; federal government ID; passport; state, county or municipal government employee ID; student or employee ID from a public or private college or trade school in Alabama; and ID issued by a state college in another state.

People without an acceptable ID are allowed to vote a provisional ballot. If they submit a valid photo ID by 5 p.m. on the Friday after the election, their vote is counted.